Manual: Note about using a local branch

This commit is contained in:
Eelco Dolstra 2014-05-28 14:38:07 +02:00
parent cf32243de5
commit a8c9c11f9e

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@ -39,7 +39,37 @@ This will check out the latest NixOS sources to
and the Nixpkgs sources to
<filename><replaceable>/my/sources</replaceable>/nixpkgs</filename>.
(The NixOS source tree lives in a subdirectory of the Nixpkgs
repository.) If you want to rebuild your system using your (modified)
repository.)</para>
<para>Its often inconvenient to develop directly on the master
branch, since if somebody has just committed (say) a change to GCC,
then the binary cache may not have caught up yet and youll have to
rebuild everything from source. So you may want to create a local
branch based on your current NixOS version:
<screen>
$ nixos-version
14.04.273.ea1952b (Baboon)
$ git checkout -b local ea1952b
</screen>
Or, to base your local branch on the latest version available in the
NixOS channel:
<screen>
$ curl -sI http://nixos.org/channels/nixos-unstable/ | grep Location
Location: http://releases.nixos.org/nixos/unstable/nixos-14.10pre43986.acaf4a6/
$ git checkout -b local acaf4a6
</screen>
You can then use <command>git rebase</command> to sync your local
branch with the upstream branch, and use <command>git
cherry-pick</command> to copy commits from your local branch to the
upstream branch.</para>
<para>If you want to rebuild your system using your (modified)
sources, you need to tell <command>nixos-rebuild</command> about them
using the <option>-I</option> flag: